/*
 * Copyright 2012 Google Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.google.android.apps.iosched.gcm.server;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

/**
 * Servlet that registers a device, whose registration id is identified by {@link
 * #PARAMETER_REG_ID}.
 *
 * The client app should call this servlet every time it receives a {@code
 * com.google.android.c2dm.intent.REGISTRATION C2DM} intent without an error or {@code unregistered}
 * extra.
 */
@SuppressWarnings("serial")
public class RegisterServlet extends BaseServlet {

    private static final String PARAMETER_REG_ID = "regId";

    @Override
    protected void doPost(HttpServletRequest req, HttpServletResponse resp)
            throws ServletException {
        String regId = getParameter(req, PARAMETER_REG_ID);
        Datastore.register(regId);
        setSuccess(resp);
    }
}
